Lamp.



W. H. THAYEB..

LAMP. APPLICATION FILE) JUNE 22, 1906.

937, 1-1 5. Patented Oct. 19, 1909.

UNITED STATES WILLIAM I-I. THAYER,

OF CHICAGO, ILLINOIS.

LAMP.

Specification of Letters Patent.

Patented Oct. 19, 1909.

Application filed June 22,1906. Serial No. 322,852.

To all whom it may concern:

Be it known that I, WILLIAM H. THAYER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Lamps, of which the followingis a specification.

My invention relates particularly to selfgenerating gas lamps whichoperate to generate their own gas supply fromhydro-carbon and othervolatile liquids.

My primary object is to provide improved mea-ns for regulating the feedof oil into the retorts of lamps of this character.

The invention is illustrated in its preferred embodiment in theaccompanying drawin in which- Figure l represents an elevational view ofa lamp equipped with my improvements; and Fig. 2, a view of the sametaken as indicated at line 2 of Fig. l.

The general construction of the lamp illustrated is well understood. Itcomprises a frame composed of tubular members a, a1, a2, c3 and a4; aburner b supported on the member a4 and equipped with a globe 55,' and aretort c receiving its oil from a pipe c1 controlled by a valve c2,whose stem projects horizontally beyond the frame and is equipped with avertical wheel o3. The members a, c1 diverge downwardly and are joinedto the upper ends of the members a2, a3 which converge somewhatdownwardly and have their lower ends connected by the bottom member at.The oil-tube c1 extends, in the usual manner, through the tubular membera, and connects in a well-known manner with the valve c2. The gas, asgenerated, passes from the retort into a tubular member c4, and thencethrough the member a3 and a portion of the member a4 to the burner b,air being drawn in at the opening c5 of the member c4 adjacent to thepoint of injection of the gas.

It will be understood that the valve c2 may be operated by turning itsstem through the medium of the wheel c3. The wheel c3 is equipped withan endless chain cl which passes about the wheel, thence through aguide-ring d1 supported on a stem projecting at right angles to theframe-member a2, the members of the chain then separating and passingover guides d2 projecting laterally from the central portion of thebottom member a4 of the lamp, It will now be understood that were forceto be applied to the chain in a direct line beneath the wheel c3 aturning moment would result, tending to swing the lamp-frame in its ownplane; and, as it is customary to suspend the lamp through the medium ofthe vertical portion of the pipe c1 or a pipe co-axial therewith, thedesirability of obviating this diiiculty is obvious. In the presentconstruction, it will be understood, any turning moment developed bydownward force applied to either member of the chain is counteracted byan opposed turning moment exerted through the guide d2, so thatequilibrium is maintained. The form of the guides @Z2 is unimportant.They have been shown as headed studs projecting laterally from the planeof the lamp-frame, so that channels are afforded between the stud-headsand the member at for the chains to run in. While it is preferred tolocate the guides d2 at the base of "and in the plane of the verticalaxis of the frame, this is not of vital importance.

What I regard as new, and desire to secure by Letters Patent, is:

l. The combination with a suspended lamp-frame equipped with a valvehaving a stem, of a flexible member connected with and serving tooperate the valve through the medium of said stem, and a guide for saidflexible member connected with said frame out of alinement with theconnection between said iexible member and said stem and in position todevelop a turning moment opposed to the turning moment exerted on thevalve-stem, thereby to maintain the equilibrium of the lamp.

2. The combination with a suspended lamp-frame equipped with a valvehaving a stem projecting from the frame and provided with an actuatingmember located at a distance from the line of suspension of said frame,of a liexible member connected with said actuating member, and a guideconnected with the base-portion of said frame out of alinement with theplane of said actuating member and receiving said flexible member,whereby counteractingturning moments are developed and equilibriummain-` tained.

3. The combination with a lamp-frame adapted at its upper portion forsuspension, and a valve having a stem projecting from the frame in theplane thereof and equipped with a wheel, of a flexible member connectedwith said wheel, a frame supported guide for said flexible memberadjacent to said wheel, and a guide for said flexible member projectinglaterally from the base of the plane of the frame at the base of theframe, frame near the centerv thereof, for the purand a flexible memberconnected with Said pose Set forth. Wheel and passing through Saidfirst-named 4. The combination with a lamp-frame, a guide and having itsmembers separated and a retort, an oil pipe, a valve controlling theextending through said second-named guides, J5

admission of'oil to the retort and having a for the purpose set `Jforth.

horizontal stem equipped With a Wheel, a WILLIAM H. THAYER. guideimmediately beneath the Wheel, a Titnessesz burner supported on theframe beneath the A. U. THORIEN,

lo retort, .guides projecting laterally from the J. H. LANDES.

